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5.3 LOCATING
COMPONENTS
Plan the mounting locations of all components (radio, control head, antenna, and cables) and determine
the routes for all wiring and cables. Particularly consider the connection of the control head for planning
purposes.
•
Determine the customer’s preferences, if any, for location of components. Comply with these
preferences as long as they are consistent with safety recommendations and guidelines presented in
this manual, and other generally accepted professional radio installation practices.
•
Nominal dimensions for the radio are 2.8 x 8.8 x 9.3 inches (7.1 x 22.4 x 23.6 centimeters; height x
width x depth). This includes the base bracket and its mounting tabs, but it does not include any
clearance space required for cabling, air circulation, access to mounting hardware, etc.
•
Verify sufficient clearance behind the units is provided so cables will not be stressed, crushed,
twisted, or bent at severe angles. Also, the front and sides must have clearance for air circulation,
access to mounting hardware, etc.
•
Connections on the radio are made through “pigtail” type cables exiting the rear of the radio. This
design minimizes the stresses associated with mating connections and it allows for easy connector
mating. However, stresses can still be induced if adequate service looping is not employed.
Connections to the CH-103 and CH-103PA Control Heads are made with connectors mounted on the
rear panel of each head instead of “pigtail” type cables.
CAUTION
All cables should have a service loop near each connector end. Do not bend the cables
at severe angles near the connector end. Above all, after all components are installed,
verify no cable is under any tension. Failure to do so may lead to damaged cables,
causing intermittent radio operation or complete radio failure.